Houda Saad1,2,*, Antonio Pizzi3,4, Bertrand Charrier2, Naceur Ayed1, Karsten Rode5, Fatima Charrier - El
Bouhtoury2
Journal of Renewable Materials, Vol.3, No.1, pp. 34-43, 2015, DOI:10.7569/JRM.2014.634130
Abstract The possible use of Tunisian pomegranate tannins in wood adhesive formulation was studied for the fi rst
time. Colorimetric tests, Fourier transformed infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR)
and matrix-assisted laser desorption/ionization time-of-fl ight (MALDI-TOF) mass spectrometry were used to
examine pomegranate tannins. Analysis showed that pomegranate peels are rich in hydrolyzable tannins. The
Stiasny number tests showed the low reactivity of pomegranate tannin extract to formaldehyde and thus the
diffi culty of using it in wood adhesive formulation. Thermomechanical analysis (TMA) and strength analysis
of pomegranate tannin/hexamine-based resin showed weak bonding properties. More >
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